The act in which a male proposes a false agreement with a female, in which the female will perform oral sex on the male and the male promises to return the favour, owing her one in the future, thus the name "68". The male then, subsequently, does not return the favour, thus a scam on the female.
He totally pulled a 68 on her the other night. He hasn't spoken to her since. Word on the street is that she is crushed.
by TheCRZ September 24, 2010
it's simple: blow me and i'll owe you one, i.e. like a 69 except i just wanna get my dick sucked without performing oral favors for the sucker (cunnilingus, analingus, or fellatio)
jimmy wanted to 69 with me but i didn't feel like licking out his scuzzy hole or suckin' on his lil' boy penis so i just let him suck me off and we called it a 68
by oral_uncle June 26, 2010